diff options
Diffstat (limited to 'include/hw/virtio')
| -rw-r--r-- | include/hw/virtio/vhost-vdpa.h | 22 | ||||
| -rw-r--r-- | include/hw/virtio/virtio-pci.h | 8 |
2 files changed, 21 insertions, 9 deletions
diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h index 0a9575b..449bf5c 100644 --- a/include/hw/virtio/vhost-vdpa.h +++ b/include/hw/virtio/vhost-vdpa.h @@ -43,7 +43,21 @@ typedef struct vhost_vdpa_shared { struct vhost_vdpa_iova_range iova_range; QLIST_HEAD(, vdpa_iommu) iommu_list; - /* IOVA mapping used by the Shadow Virtqueue */ + /* + * IOVA mapping used by the Shadow Virtqueue + * + * It is shared among all ASID for simplicity, whether CVQ shares ASID with + * guest or not: + * - Memory listener need access to guest's memory addresses allocated in + * the IOVA tree. + * - There should be plenty of IOVA address space for both ASID not to + * worry about collisions between them. Guest's translations are still + * validated with virtio virtqueue_pop so there is no risk for the guest + * to access memory that it shouldn't. + * + * To allocate a iova tree per ASID is doable but it complicates the code + * and it is not worth it for the moment. + */ VhostIOVATree *iova_tree; /* Copy of backend features */ @@ -51,6 +65,12 @@ typedef struct vhost_vdpa_shared { bool iotlb_batch_begin_sent; + /* + * The memory listener has been registered, so DMA maps have been sent to + * the device. + */ + bool listener_registered; + /* Vdpa must send shadow addresses as IOTLB key for data queues, not GPA */ bool shadow_data; diff --git a/include/hw/virtio/virtio-pci.h b/include/hw/virtio/virtio-pci.h index 1dbc385..eab5394 100644 --- a/include/hw/virtio/virtio-pci.h +++ b/include/hw/virtio/virtio-pci.h @@ -32,9 +32,7 @@ DECLARE_OBJ_CHECKERS(VirtioPCIBusState, VirtioPCIBusClass, enum { VIRTIO_PCI_FLAG_BUS_MASTER_BUG_MIGRATION_BIT, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, - VIRTIO_PCI_FLAG_MIGRATE_EXTRA_BIT, VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY_BIT, - VIRTIO_PCI_FLAG_DISABLE_PCIE_BIT, VIRTIO_PCI_FLAG_PAGE_PER_VQ_BIT, VIRTIO_PCI_FLAG_ATS_BIT, VIRTIO_PCI_FLAG_INIT_DEVERR_BIT, @@ -54,12 +52,6 @@ enum { * vcpu thread using ioeventfd for some devices. */ #define VIRTIO_PCI_FLAG_USE_IOEVENTFD (1 << VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT) -/* virtio version flags */ -#define VIRTIO_PCI_FLAG_DISABLE_PCIE (1 << VIRTIO_PCI_FLAG_DISABLE_PCIE_BIT) - -/* migrate extra state */ -#define VIRTIO_PCI_FLAG_MIGRATE_EXTRA (1 << VIRTIO_PCI_FLAG_MIGRATE_EXTRA_BIT) - /* have pio notification for modern device ? */ #define VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY \ (1 << VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY_BIT) |